Thermally Conductive Insulators
Tgard™ 300 Series
HIGH PERFORMANCE THERMAL INTERFACE PRODUCTS
Tgard™ 300 is a medium thermal performance insulator pad consisting of a ceramic high
temperature silcone rubber coated on electrical fiberglass.
Tgard 300 is specifically designed for applications that require low component mounting forces.
The unique formulation will enhance thermal performance which minimizes thermal resistance
at low mounting forces. The uniqe coating formulation offers an excellent mating surface for low
pressure clip mounting applications.
FEATURES AND BENEFITS
•
•
•
•
High breakdown voltage of 6,000 volts AC
Thermal resistance of 0.50º C-in2/watt at 50 psi
Unique coating formulation offers low mounting forces
Unifying benefits of thermal & electrical performance
for general-purpose applications
APPLICATIONS
• Switching mode power supplies
• Industrial equipment
• Motor controls
Americas: +1.847 839.6907
IAS-AmericasEastSales@lairdtech.com
Europe: +44.1628.858941
IAS-EUSales@lairdtech.com
Asia: ++86.21.5855.0827.127
IAS-AsiaSales@lairdtech.com
CLV-customerservice@lairdtech.com
www.lairdtech.com/thermal
Thermally Conductive Insulators
Tgard™ 300 Series
PROPERTIES
ELECTRICAL PROPERTIES
Dielectric withstand voltage
50mm probe for 30 sec
Dielectric breakdown voltage
50mm probe
Volume resistivity
Dielectric constant @1Mhz
Electrical RTI temperature rating
MECHANICAL PROPERTIES
Thickness
Hardness
Tensile strength
Elongation @ 45º to warp/fill
Elongation along width or length
Operating temperature range
Color
UL flammability rating
TEST METHOD
METRIC VALUES
IMPERIAL VALUES
ASTM D149
ASTM D149
ASTN D257
ASTN D257
UL746D
4,500 volts DC
Avg >6,000
volts AC
10
12
ohm-cm
3.3
150ºC
4,500 volts DC
Avg >6,000
volts AC
10
12
ohm-in
3.3
302ºF
0.23 mm
ASTM D2240
ASTM D412
ASTM D412
ASTM D412
75 Shore A
10 Mpa
20%
5%
-60º to 180ºC
Yellow
UL 94
V-0
0.009 in
75 Shore A
1.5 Kpsi
20%
5%
-76º to 356ºF
Yellow
V-0
PRESSURE
TOTAL THERMAL RESISTANCE
Modified ASTM D5470
Modified ASTM D5470
T0-220
UNITS
10
(69)
0.62
4.00
1.17
25
(172)
0.57
3.68
0.92
50
(345)
0.50
3.09
0.83
100
(689)
0.41
2.65
0.81
200
(1379)
0.34
2.19
0.80
400
(2758)
0.30
1.94
0.76
ºC-in
2
/watt
ºC-cm
2
/watt
ºC/watt
Standard thickness:
Configurations available:
Standard options:
9 mils (0.229 mm)
• Sheet form, roll form and die-cut parts
• Single-side, pressure-sensitive adhesive on request
• Without adhesive (A0): 12 x 18" sheets, 12" x 65M,
12" x 30M roll or custom configuration
• With adhesive (A1): 11.75 x 18" sheets, 11.75" x 30M roll
or custom configuration
THR-DS-Tgard-300_032515
Any information furnished by Laird and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and
application of Laird materials rests with the end user, since Laird and its agents cannot be aware of all potential uses. Laird makes no warranties as to the fitness, merchantability
or suitability of any Laird materials or products for any specific or general uses. Laird, Laird Technologies, Inc or any of its affiliates or agents shall not be liable for incidental or
consequential damages of any kind. All Laird products are sold pursuant to the Laird Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will
be furnished upon request. © Copyright 2015 Laird Technologies, Inc. All Rights Reserved. Laird, Laird Technologies, the Laird Technologies Logo, and other marks are trademarks
or registered trademarks of Laird Technologies, Inc. or an affiliate company thereof. Other product or service names may be the property of third parties. Nothing herein
provides a license under any Laird or any third party intellectual property rights. Document A16898-00 3/2015
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